we have to come to the realize that the election ises past. let's put politics aside and let's he get things done. >> ana navarro, maria dough in a, thanks so much. >>> david gregory under investigation. did he violate d.c.'s gun laws on the air? jeffrey toobin joins me straight ahead. >>> an unusual police investigation here in the nation's capital. it started with this interview with a top nra leader on nbc's "meet the press." >> here is a magazine for ammunition that carries 30 bulletses. isn't it possible that if we got rid of these, if we replaced them and said could you only have a magazine that carries five or ten bullets, isn't it just possible that we could reduce the carnage? >> gun magazines like the one david gregory held up are illegal in the district of columbia presuming that was the real thing where "meet the press" is reported. i asked d.c. police about this and i got this statement. nbc contacted the met row poll tan police department inquiring if they could utilize a high capacity magazine for their segment. nbc was informed